Valve.



W. B. BURKE.

VALVE.

APPLICATION FILED HOV.13, 1911.

1 aw/5 114 rl riiv i ii 1w Patented June 23, 1914,

WITNESSES .is a transverse section taken on the WILBUR B. BURKE, orCLEVELAND, OHIO.

VALVE.

Specification of Letters Patent.

Patented June 23,1914.

Application filed November 13, 1911. Serial No. 660,100.

To all whom it may concern:

' Be it known that I, VVIpBUR B. BURKE,

.a citizen of the United States, and a resident of Cleveland, county ofCuyahoga, and State of Ohio, have invented a new and useful- Improvementin Valves, of which the following is a specification, the principle ofthe invention being herein explained and the best mode in which I havecontemplated applying that principle, so as to distinguish it from otherinventions possible, all superfluous parts, such' as springs and thlike, the excess of pressure Within the tire being utilized to retainthe valve in its closed position.

To the accomplishment of the foregomg and related ends, the saidinvention, then, consists of the means hereinafter fully described andparticularly pointed out in the claims. 7

The annexed drawing and the following description set forth in detailcertain mechanism embodying .the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may used.

In said annexed drawmg: Figure 1 is a side elevation, with part insection, of my improved valve; Fig. 2 is a sectional representation, ona larger scale, of the upper portion of said valve, and shows, moreover,the valve member proper in its closed position, instead of open as inFig. 1; F1 3 me 3-3, Fig. 2; Fig. 4 is a section of a detail of thevalve appearing in Fig. 2, and showing the manner in which .a certainwasher or gasket is secured in illustrates in operating wit such gasket.The body 1 of the valve isshown as of usual tubular construction, beingprovided with a flange 2 at its lower or inner end, and. w1th means,including a late 3 and assoclated nut 4,

place; while Fig. 5v lan view, one of the parts cothat cooperate withsuch flange to secure sald valve body to the tire (not shown). Anothernut 5 for clamping the valve body to the rim is lso shown. The outerortion, or free end, of the valve body is sliglitly reduced in diameter,this portion being threaded in order to receive a dust cap (not shown),which incloses the portion of the valve that normally projects throughthe wheel rim or felly.

The passage or opening 6 through the Valve body is of uniform bore,savem such outer portion where it is somewhat enlarged so as to provideashoulder 7 directed toward its outer end against which'shoulder thevalve member 8, proper, may rest when in its inner and inoperativeposition, as shown in Fig. 1. This enlarged portion of the passage isinternally threaded fora part of its extent to receivean externallythreaded seat-member 9 that projects beyond the end of the valve bodyand is threaded to receive a cap 10. The inner end of member 9 forms anannular valve seat 12 that is directed inwardly from the walls of thebody-member l and is externally beveled so as to provide an inwardlydirected annular seat, with a relatively sharp edge that is spaced clearof the surrounding wall of the body 1.

The valve-member, the construction of g which is clearly shown in Fig.2, is of general tubular form, being open at its inner or lower end, andprovided with a head 11 at the other or outer end that is adapted tocontact with the aforesaid seat, said valve closing with the flow offluid outwardly through the passage in the valve body; in other words,said valve will be seated by an excess of pressure in the tire wherewiththe valve body is connected, as will be readil y understood. The forwardend of the valve member, including such head, is desirably made of asmaller diameter than the remainder ,of the body so as to providean openannular space adjacent to the valve seat, and apertures 13 are providedin thethis feature ofconstruction. The number of such apertures 13 is amatter of selection,

three being shown, (see Fig. 3), The general effect of the constructionand arrangement of the valve member and these apertures, taken inconjunction with the annular space surrounding the valve head and seat,is to provide a relatively free passage for the air through the valvewhen said member is open; in other words, the passages communicatedirectly and with no sharp turns or corners, while no springs or likeconstructions whatever, are involved. Consequently, when the valve isdetached from the tire, or if the latter is deflated,.the valve-memberis unrestrainedly reciprocable in both direct'ions.

Extending from the outer face of the valve head, which contacts with theseat, and

in line with the axis of the valve, is a stem or deflating member 14- ofsuch length that its outer end projects well into or even through theseat member in the closed position of the valve. The use of this stem asan operating member for openin the valve against the pressure behind theatter, will be readily understood. Such outer face of 1 the valve headis furthermore provided with a washer 15 of softer material than themetal whereof the parts thus far described are fashioned, as foreiiample, rubber. To receive this washer the head is provided with anannular recess of a depth substantially equal to the thickness of thewasher. The latter is then held in place by means of a small nut16'threaded over the afore said central stem or deflating member suchnut being of tapering form with its iarger diameter opposed to thewasher and very nearly equaling that of the bore through the seat-member9. "Said nut, accordingly is adapted to support the washer closelyadjacent to the line of contact between the latter and the annular seat.The tendency which, accordingly, may at times become manifest for thewasher, where of rubber, to stick to such seat, is readily overcomewithout damage occurring to said washer, since it is thus supportedclose to the contacting edge. Moreover, should for any reason the oneface of the washer become damaged, so as to no longer make a tightfitting closure with the seat, by simply removing the nut, the washermay be reversed and thus rendered at least' temporarily eflicientagain.

A tight seat is desirably formed between the cap 10 and the outerprojecting end of the seat-member, and with this in view, a similar, butlarger washer 17, preferably of packing material similar to that on thevalve, is mounted on the under faceof said cap, so as to bear againstthe outer edge of the seat member. A recess is likewise formed toreceive this washer, the wall 18 between such recess and a centralrecess 19 into which the deflating valve stem 14 extends, being so thinthat the edge of such wall may be reamed or otherwise bent over tosecurely lock the washer, thus preventing its displacement and possibleloss. Such central recess 19 in the cap extends upwardly into a boss orlug 20 on the outer face of the cap which is available to depress thevalve stem when it is desired to open the valve, in order to deflate thetire. In this way it is seen that space is economized just as in thecase of the valve head, without increasing the longitudinal or diametraldimensions of the valve over those at present recognized as standard.

It is, of course, necessary that a tight fitting joint be also effectedbetween theseatmember 9 and the outer end of the valve body or casing 1.Such seat-member is, accordingly, provided with a shoulder 21 opposed tosuch end of the body, while the latter is recessed to receive a washer22,

preferably of lead, or equivalent material.

The shoulder on the seat member is provided with a circular lip 23 madewitha sharp cutting edge (see Figs. 4 and 5), so disposed as to liewithin the outer edge of the recess in the body member and so have atelescoping relation thereto; A washer of a width larger than the recessis then employed, but by drawing down the seat member, the raised lipwill cut away the superfluous portion of such washer, at the same timethat the latter is forced into the recess. A tight fit is thus insured,while the lip protects the outer edge of the washer and is adapted, asthe latter is compressed, to itself enter the recess, should this becomenecessary.

The foregoing improved construction of packing joint forms the subjectmatter of a divisional application filed by me May 22, 1914, Serial No.840,161.

The foregoing construction of valve has been found in actual practicenot "only to provide a thoroughly efi'ective closure for tires under allpressures ordinarily employed therein, but also by reason of itssimplicity and fewnessof parts, to afford valve opens voluntarily whenthe charging pressure equals that within the tire and is promptlyclosed, without loss, by the pressure within the tire whenever suchcharging pressure falls below the latter Other modes of applying thedprinciple of my invention may be employe instead of the one explained,change being made as regards the mechanism herein disclosed, providedthe means stated by any of the following claims or the equivalent ofsuch stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In a device of the character described, the combination ofa tubular body-member; means on one end of said member for securing thesame to a tire or the like, said member having its bore provided with aninwardly directed shoulder adjacent to such end; a second tubular memberthreaded into the other end of said body-member and provided with a seatfacing such shoulder; and a tubular valve-member unrestrainedlyreciprocable in both directions between the i the combination of atubular body-member; means at one end of said member for securshoulderand the seat, said valve-member being open at one end and provided witha head at its other end arranged to abut against such seat, and havingapertures through its head, substantially as described.

2. In a device of the character described,

the combination of a tubular body-member; means on one end of saidmember for securing the same to a-tire or the like, said member havingits bore provided with an inwardly directed shoulder adjacent to suchend; a second tubular member threaded in the other end of saidbody-member, the inner end of said second member being externallybeveled to form a valve seat facing such shoulder; and a tubularvalve-member unrestrainedly reciprocable in both directions between suchshoulder and seat, said valve member being open atone end and providedwith an apertured head at its other end arranged to abut against suchseat, the aperture in the head opening outside the line of its contactwith the seat.

3. In a device of the character described, the combination of a tubularbody-member;

means on one end of said member for se curing the same to a tire or thelike, said member having its bore provided with an inwardly directedshoulder adjacent to such end; a second tubular member threaded in theother end of said body-member, the inner end of said second member beinexternally beveled to form a valve seat acing such shoulder; and atubular valve-member unrestrainedly reciprocable in both directionsbetween such shoulder and seat, said valve-member bein substantially ofthe same diameter as e bore in said bodymember, and being open at oneend and having an apertured head of reduced diameter at its other endarranged to abut against such seat.

4. In a device of the character described, the combination of a tubularbody-member; means on one end of said member for securing the same to atire or the like, said I member having its bore provided with an inwardly directed shoulder adjacent to such end; a second tubular memberthreaded in the other end of said body-member, the inner end of saidsecond member being externally beveled to form a valve seat facing suchshoulder; and a tubular valvemember unrestrainedly reciprocable in bothdirections between such shoulder and seat,

vsaid valve-member being substantially of the same diameter as the borein said bodymember, and beinglopen at one end and having an aperturedead of reduced diameter at its other end arranged to abut against suchseat, the apertures in said valve-member opening into the annular spacebetween such head and the Walls of said body- 1 member.

5. In a device of the character described,

ing the same to a tire or the like, said memher having its bore formedwith an integral inwardly directed shoulder adjacent to such end; asecond tubular member threaded into the other end of said bodymember,the inner end of said second member being externally beveled to form avalve seat with a relatively sharp edge spaced clear of said body-memberand facing such shoulder and a tubular valve-member unrestrainedlyreciprocable in both directions between such shoulder and seat, saidvalvemember being of substantially the same diameteras the bore in saidbody-member, and bein open at one end and having an aperture head ofreduced diameter at its other end arranged to abut end-on against suchseat, the apertures in said valve-member opening into the annular spacebetween such head and the wall of said body-member and incliningforwardly so as to direct the fluid against such seat when said valve isopen.

6. In a device of the character described,

the combination of a tubular body-member;

tubular valve-member unrestrainedly reciprocable in both directionsbetween such shoulder and seat, said valve-member being of substantiallythe same diameter as the bore in said body-member, and being open at oneend and having an apertured head of reduced diameter at its other endarranged to abut end-on against such seat, the

apertures in said valve-member opening into the annular space betweensuch head and the wall of said body-member and'inclining forwardly so asto direct the fluid against such seat when said valve is open; a stemprojecting from the head of said valve-member into said second member;and a washer of relatively soft material secured to the head ofvalve-member around said stem.

7. In a device of the character described, the combination of a tubularbody-member; means at one end of said member for securing the same to atire or the like, said member havin its bore formed with an integralinwardly iirected shoulder adjacent to such end; a second tubular memberthreaded into the other end of said body-member, the inner end of saidsecond member being externally beveled to form a valve seat with arelatively sharp edge spaced clear of said body-member and facing suchshoulder; a tubular valve-member unrestrainedly reciprocable in bothdirections between such shoulder and seat, said valve-member being ofsubstantially the same diameter as the bore in said body-member, andbeing open at one end and havin an apertured head of reduced diameter at1ts other end arranged to abut end-on against such seat, the aperturesin said valve-member opening into the annular space between such headand the wall of said body-member and inclining forward-1y so as todirect the fluid against such seat when said valve is open; a stemprojecting from the head of said valve-member into said second member; awasher of relatively soft material surrounding said stem adjacent to theface of said valve-member head; and a nut threaded on said stem andadapted to secure said washer in place, said nut being of smallerdiameter than the bore of said seat member.

Signed by me this 10th day of November, 1911.

WILBUR B. BURKE.

Attested by:

ANNA L. GILL, J NO. F. OBERLIN.

